<template>
  <div class="login-container">
    <el-form
      ref="loginForm"
      :model="loginForm"
      :rules="loginRules"
      class="login-form"
      auto-complete="on"
      label-position="left"
    >
      <div class="title-container">
        <h3 class="title">登录</h3>
        <h4 class="sub-title">欢迎使用阅师管理系统!</h4>
      </div>
      <el-form-item prop="username">
        <div class="form-title">
          <span>账号</span>
        </div>
        <el-input
          ref="username"
          v-model="loginForm.username"
          placeholder="请输入账号"
          name="username"
          type="text"
          tabindex="1"
          auto-complete="on"
        />
      </el-form-item>

      <el-form-item prop="password">
        <div class="form-title">
          <span>密码</span>
        </div>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="请输入密码"
          name="password"
          tabindex="2"
          auto-complete="on"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <svg-icon
            :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'"
          />
        </span>
      </el-form-item>

      <el-button
        :loading="loading"
        type="primary"
        style="width:100%;"
        @click.native.prevent="handleLogin"
        >登&nbsp;&nbsp;录</el-button
      >
    </el-form>
    <footer>
      <p class="fs-12 text-center">
        Copyright © 2020 阅师
        <a href="http://beian.miit.gov.cn" target="_blank">粤ICP备20020070号</a>
      </p>
    </footer>
  </div>
</template>

<script>
// import { validUsername }  from '@/utils/validate'
export default {
  name: 'Login',
  data() {
    const validateUsername = (rule, value, callback) => {
      if (!value) {
        callback(new Error('请输入账号'))
      } else {
        callback()
      }
    }
    const validatePassword = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error('密码至少为6位'))
      } else {
        callback()
      }
    }
    return {
      loginForm: {
        username: 'yesccc',
        password: '123456'
      },
      loginRules: {
        username: [
          { required: true, trigger: 'blur', validator: validateUsername }
        ],
        password: [
          { required: true, trigger: 'blur', validator: validatePassword }
        ]
      },
      loading: false,
      passwordType: 'password',
      redirect: undefined
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  methods: {
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true
          this.$store
            .dispatch('user/login', this.loginForm)
            .then(() => {
              this.$router.push('/')
              this.loading = false
            })
            .catch(() => {
              this.loading = false
            })
        } else {
          console.log('error submit!!')
          return false
        }
      })
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: rgb(244, 244, 244);
$light_gray: #fff;
$cursor: #3e3f42;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 38px;
    width: 100%;

    input {
      background: transparent;
      -webkit-appearance: none;
      border-radius: 4px;
      padding: 12px 5px 12px 15px;
      color: #3e3f42;
      height: 38px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    background: rgba(255, 255, 255, 1);
    border-radius: 5px;
    margin-bottom: 23px;

    &.is-error {
      input {
        background: #ffeceb;
      }
    }

    .el-form-item__error {
      padding-top: 6px;
    }

    .form-title {
      color: #9ea0a5;
      font-size: 12px;
      line-height: 14px;
      margin-bottom: 7px;
    }
  }
}
</style>

<style lang="scss" scoped>
$bg: rgb(244, 244, 244);
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;
  position: relative;

  .login-form {
    position: relative;
    width: 445px;
    max-width: 100%;
    padding: 40px 30px;
    margin: 20vh auto 0;
    overflow: hidden;
    background: rgba(255, 255, 255, 1);
    box-shadow: 0px 1px 3px 0px rgba(0, 0, 0, 0.04);
    border-radius: 8px;
    border: 1px solid rgba(234, 237, 243, 1);
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      line-height: 38px;
      font-size: 26px;
      color: #3e3f42;
      margin: 0px auto 5px auto;
      font-weight: normal;
    }

    .sub-title {
      line-height: 28px;
      font-size: 18px;
      color: #9ea0a5;
      margin: 0px auto 20px auto;
      font-weight: normal;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    bottom: 0;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }

  footer {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100px;
    padding-top: 40px;
    a:hover {
      color: #1665d8;
    }
  }
}
</style>
